JPS5994602A - Panty stocking or stocking with torque type having extensibility in warp and weft directions - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a torque-type bunch dog tock having excellent elasticity in both warp and warp directions, in which at least the leg portion is knitted from torque yarn of a thermoplastic elastomer, particularly a specific polyester/polyether elastomer. Ama relates to stockings (hereinafter both are collectively referred to as stockings).

Conventionally, stockings have been roughly divided into torque type and woolly type.
Torque type or woolly type false twisted yarns made of so-called inelastic thermoplastic synthetic fibers such as polytetramethylene prephthalate are used. In addition, the IN denier of the synthetic fiber board twisted yarn is approximately 5 to 60 for all types.
Denier filaments are used, and the number of constituent filaments is 1 to 3 in the case of torque type and 4 to 8 in the case of woolly type. That is, when the number of filaments is 3 or less, only a torque type yarn is produced, and when there are 4 or more filaments, a crimped Woo IJ-type yarn is produced. From this background, the characteristics of the final stocking product are that in the case of the torque type, there are fewer filaments and there is no crimp, only torque, so the transparency and beauty of the thin surface are better than that of the woolly type. They are much better than stockings. However, the elasticity of the stockings, particularly in the weft direction, is low, and therefore they are inferior to the woolly type in terms of free blade size and fit. If the stocking has two or less synthetic filaments (N) and is intended to have elasticity, the constituent filaments may be side-paired or This can be solved by using an eccentric core-sheath type composite filament, but manufacturing a composite filament requires a large amount of capital investment, and
Since it is a component, it has the disadvantage that the production process is complicated and costs increase accordingly. ! ,Ta.

In terms of quality, this can be said about all conventional torque type stockings, but because the number of filaments is small, the single yarn denier is thick, has elasticity in the heel direction, and has a flexible texture. As a result of various studies aimed at obtaining torque-type stockings with good transparency, the present invention was achieved.

That is, the present invention provides that at least the leg portions of stockings or pantyhose have hard segments containing 50 to 90 polyester units containing 60 moles or more of polyethylene terephthalate units (I) 1% and polytetramethylene ether having a molecular weight of 500 to 4,000 as soft segments. 10 to 50% by weight of polyalkylene ether glycol units containing 60 moles or more of glycol units
LA fiber consisting of a polyethylene terbolyether block copolymer with a melting point of 180°C or higher, which has a total fineness of 5 to 60 deniers, a filament number of 1 to 3, and a snarl number of 50 to 1000 pieces/m The stocking is knitted with torque yarn as the main knitting yarn, and the elongation rate in at least the two leg parts of the stocking (elongation rate under a load of 200y per grip width 5σ in the warp and weft directions)
This is a torque type stocking having elasticity in both warp and weft directions, characterized in that the elasticity is at least 80% in both directions.

One of the important features of the present invention is the use of a specific polyester-polyether block copolymer for the torque threads that make up the stocking.

The block copolymer has a polyester unit containing polyethylene terephthalate units of 60 molti or more, preferably 80 molti or more as a hard segment,
It is a block copolymer whose soft segment is a polyether containing 60 molti or more, preferably 80 molti or more of polytetramethylene ether glycol units.

In addition to polyethylene terephthalate units, the polyester units include polymethylene terephthalate units, polypropylene terephthalate units,
One or more of polytetramethylene terephthalate units, polyethylene isophthalate units, etc. or 24i1f or more may be copolymerized. In addition, polyether units include polytetramethylene ether glycol,
One or more types of polyethylene ether glycol units, polypropylene ether glycol units, polyhexamethelene ether glycol units, etc. up to 40 moles may be copolymerized. The copolymerization components of the hard segment and the soft segment are not limited to those exemplified in section 2.

In particular, products using isophthalic acid, dimer acid, and 3,5-di(carbomethoxy,y)benzenesulfonic acid metals as copolymerization components are practical in terms of cost reduction and dyeability improvement. This is useful. Among these, the most preferred is polyethylene terephthalate as the hard segment.

It is a polyester/polyether block copolymer with polytetramethylene ether glycol as a soft segment. The copolymerization ratio (heavy forging) of the aromatic polyester as a hard segment and the polyalkylene ether glycol as a soft segment is 65:
A ratio of 35 to 95:5 is preferable, more preferably 75:5.
25-90:10 is good. That is, it is characterized by a higher proportion of hard segments than the copolymerization ratio normally used as a thermoplastic elastomer for chemical products. The reason for this is that when producing the torque yarn constituting stockings, if the amount of soft segments increases, the false twisting processability decreases, making it impossible to produce the torque yarn. In addition, the number average molecular weight of the polyalkylene ether glycol is 500 to 500, in order to increase the melting point of the fibers and especially to obtain elasticity of the final stockings.
4000 is preferable, and even more preferable is uiooo~2
000 is good.

A further necessary characteristic of the polyester/polyether block copolymer used in the present invention is that the copolymer has a melting point of 180° C. or higher.

The reason for this is that polymers with a melting point of less than 180°C generally have a small molecular weight and insufficient strength, resulting in poor durability as stockings.

Preferably it is 200°C or higher. Here, the melting point is
Differential made by Perkin E1mer
5can'ning Calorimeter (D
This is the value expressed by the endothermic peak temperature measured using the S C-I B type) at a heating rate of 10°C/min. Incidentally, a heat-resistant agent, an antioxidant, a light-resistant agent, a flame retardant, a matting agent ('riO2), etc. may be added to the polyester/polyether block copolymer as required.

Hereinafter, the polyester/polyether block copolymer which is the knitting yarn of the stockings of the present invention has been described in detail, but one of the more important requirements in the present invention is the torque yarn which is the knitting yarn of the stockings. The total fineness of the wood is 5 to 60 deniers, and the number of filaments is 1 to 3,
Preferably, the number is 1 to 2, and the number of Snarls is 50 to 50.
1000 times/m. Here, what is the Nunar number?

A weight of 100 cm/denier is suspended from the center of a 200 ctn thread, both ends of the thread are held together, and the thread is rotated freely to completely release the thread torque. Refers to the number of twists. The reason why the Nunar number is limited to the above range is that by setting the Nunar number to 50 times/m or more, it is possible to reduce the number of Nunars after composition under normal assembly conditions.

After passing through the dyeing process, heat set (ripening 10.0″C ~ 13cm)
0°C), the elongation rate under a load of 2001 per 5α gripping width in both the weft and weft directions in one leg part of the final stocking was approximately 80 inches or more, and the stocking had elasticity in both the weft and weft directions. This is because it will be done. Further, it is necessary that the Snarl number is 1,000 times/m or less because if it is more than 1,000 times/m, the stocking knitting becomes asymmetrical and the appearance of the product is impaired.

Preferably it is 200 to 600 times/m.

Stockings are knitted using the torque yarn as described above, and the knitting method may be circular knitting or full fashion knitting. Furthermore, in the stockings of the present invention, at least the leg portions are knitted with 11J torque yarn, but the other portions, namely the leg, hunts, ankle, heel, sole, and toe portions are knitted only with 1JiJ torque yarn. It may be knitted with other threads, or it may be knitted with other threads depending on the part. For example, the pacity part can be made of commonly used false twisted yarns of nylon or polyester (especially polyethylene terephthalate or polytetramethylene derephthalate 1), or a combination of the false twisted yarn and cotton. It may be an edition. However, in order to facilitate color matching during dyeing in the same bath, 30~
It is recommended to use a false twisted yarn of 40 denier and about 10 filaments. Since the leg part is the part that causes sagging, it is necessary to increase the elongation rate of the core part.

Hereinafter, the stockings of the present invention will be illustrated with reference to Examples, but the present invention is not limited by the Examples below.

Example 1 ethylene glycol having 4 tails and polytetramethylene needle glycol (PTG) having a number average molecular weight of 1N2000,
71'PA/P'rG molar ratio was 30.0, and mate with 0.15% of antioxidant (Ionox 33o, Shell Oil Co., Ltd. product name) and 0.05% of catalyst. Pour into a crepe and heat while stirring to 150 ml.
Enter exchange reaction was carried out by raising the temperature to ~240°C, and the generated methanol was distilled out of the thread.

Thereafter, while reducing the pressure by 5 degrees, the temperature was raised to 250°C and held for 100 minutes to polymerize, producing a polyester with a melting point of 223°C.
Polyether block copolymer A was obtained. The PTG value in this copolymer was 1.26%, 8 holes, and the spinning speed was 5.
00m/*! *The undrawn yarn of 80 denier/filament was divided into eight parts and wound up. The undrawn yarn was drawn and false twisted at a speed of 800 m/win, and S
and 20 at Nunar number 600 times/m for both Z directions
A torque yarn of denier/1 filament was obtained. Thread the fat torque yarn through a 4 () gauge rootlet to form a - stocking, and test the upper part of the leg part with a 5 cnr + Jqil +91 mm on an isinutron tensile tester.
When stretched with 200y (tTi weight, longitudinal direction 14
The elongation rate was 5% and 153% in the latitudinal direction. 10 after weight removal
0% recovery to original size. In this way, stockings with excellent elasticity in both warp and warp directions, excellent j-sharpness, and beautiful slim sides were obtained. The stockings have excellent fit.

There were no wrinkles or sagging, and the texture was soft and had an excellent feel.

Comparative Example 1 For a commercially available torque-type pantyhose knitted with nylon 6-torque yarn of 20 denier/1 filament, the elongation rate in the longitudinal and latitudinal directions was measured at the leg section, which is the same section as in Example 1. As a result, the longitudinal elongation rate was 95% and the weft elongation rate was 65 inches. Fit of the stockings ti'4 l (inferior to those of Example 10 Example 2゜TI in the same manner as Example 1) A/P'rG
PTG content is 0% and 15% according to the molar ratio of
.

30%, 50%, and 60% polyester/polyneedle block copolymers B, C, D, E, and F were obtained. When these polymers were melt-spun, the initial speed of FK was lowered to 300 m/win, and the cooling and solidification of FK-C was also insufficient, making melt-spinning difficult. The melt-spun yarn of B-E was thinned into stockings in the same manner as in Example 1, and the elongation rates in both the weft and weft directions were measured, and the results are shown in Table 1.

Table 1 Stockings from Number C-E had an excellent fit, did not wrinkle or sag, were soft to the touch, and had excellent transparency; The fit was poor, and the touch and feel were not good.

Real J eave Example 3゜Example? - Regarding the polyester/polyether block copolymer 0 shown in Example 1. Spinning and drawing were carried out in the same manner as above to obtain a torque yarn of 20 denier/2 filaments with a Snarl number of 5 o□ times/m. The leg, ankle, and sole portions of pantyhose were knitted using the torque yarn with a 4o gauge knitting sera. On the other hand, the panty part, toe part, and heel part are dyed in order to facilitate color matching when dyeing the leg part and panty part 7 in the same bath.
Using the same polyester/polyether block copolymer 0 described above as Retsu Rei\, a 40 denier/1o filament false twisted yarn was prepared by a conventional method, and 40 gauge knitted (knitted using a pot).

Thereafter, a dyeing finishing process was performed to obtain pantyhose. The 11° outer button of the pantyhose was beautiful, and the leg portion in particular had excellent transparency and fit, did not wrinkle or sag, and was soft to the touch.

Procedure Amendment Book February 6, 1982 [(1. Indication of the case 1982 Patent Application No. 199381 2 Name of the invention Torque-type pantyhose or stockings with elasticity in both directions 3 Make the amendment Samurai II'! Applicant 2-8-5, Dojihama 2-chome, Kita-ku, Osaka City” is corrected as [5o:so~90:10”] by R1.

Claims (1)

[Scope of Claims] Pantyhose or at least the leg portions of the stockings contain polyethylene terephthalate units as hard segments with a mol ratio of 60 or more Borienether units, 50 to 90% heavy needles, 5 molecular k as soft segments.
A fiber consisting of an amalgamation of polyester polyether blocks having a melting point of 180° C. or higher and consisting of 10 to 50 ffim% of polyalkylene ether glycol units containing 500 to 4,000 polytetramethylene ether glycol units (60 moles or more), Total fineness is 5 to 60 denier, number of filaments is 1 to 3, and number of snarls is 50.
~1,000 pieces/m of torque yarn as the main knitting yarn, and the pantyhose or (l
Torque type pantyhose or stockings having elasticity in both warp and warp directions, characterized in that the elongation rate in at least the leg and heel parts of the j-stocking is 80% or more in both the vertical and horizontal directions. Similar, elongation rate: grip width in warp and latitude directions 5 - 20 per
(This means under a load of 1'. Melting point: Perkin E1mer, Dif
ferentialScanningCalorirn
The value expressed as the endothermic peak temperature measured by eter (DSC-IB type) at a temperature rate of 10°C/min. Grip both ends of the yarn together and rotate the yarn freely to completely release the torque of the yarn.